What does this display: Class Obj{ public $a = 2; public function __construct($var=null){ if(!empty($var)) $this->a = $var } } $obj = new Obj(0); echo $obj->a;

Function to hash a password for storage?

What function checks a supplied password against a password hashed using password_hash?

What's the output? function counter($a){ $result = ++$a++; return $result; } echo counter(5);

What is the answer of this $a = 'b' $b = 1; echo '$${a}'

What's the output? echo 4<<4;

Which functions compute the intersection of arrays with additional index check and are defined newly in PHP5?

What does php_strip_whitespace function return?

The number of parameters in setCookie function

What's the output? $a = 0 or 1; $b = 0 || 1; echo '$a, $b';

What's the output? function test(&$var) { $var=$var-1; return $var; } $returnVar = test(50); echo $returnVar. ' is answer.';